G 3800 X036 Operation Manual
August 2006
64
© 2006 Carlo Gavazzi Industri A/S. All rights reserved
Description
The purpose of the Water Alarm is an alarm system consisting of water sensors integrated as Passive or Active
detector. The wiring makes it possible to replace conventional water alarm systems.
Water detectors are generally included in the system through the objects “Passive detector” or “Active detec-
tor”. The alarm system is automatically alert after elapse of the Reset delay (set with the reset object), when
the Configuration software has been downloaded or the Mastergenerator has been switched on. The Reset
output switches on within this time.
An alarm is triggered off when one or several alarm contacts are activated for more than 10 s. The system steps
through the activated alarm contacts (as alarm indication) as well as the alarm output approx. every second.
The alarm siren flashes with a pulse-pause ratio of approx. 3 s/57 s. By subsequent activation of the reset key,
the Mastergenerator resets the stepping through of the alarm contacts and the alarm output. If contacts are
still activated, another alarm is triggered off after elapse of the reset delay.
Note:
Configuration of the object “Reset” is absolutely necessary to ensure the correct function.
The status of the alarm contacts can be shown in a simple way on a panel. All that is needed for this purpose
is that the output channels are coded to the addresses of the alarm contacts.
The “Silent Alarm Signal” is intended for sending an alarm to a monitoring centre. Also suitable for sending an
SMS.
For alarm purposes, the object Common Siren can also be used. Details can be found in the chapter
describing the alarm siren/Common siren.
The various water alarm objects are selected under “Channel function”:
Passive detector:
Normally open input. This object makes it possible to include
passive detectors. When the contact is activated and a “1”-Signal
consequently transmitted on the Dupline bus, an alarm is started.
Active detector:
Normally closed input. This object makes it possible to include
active detectors. When the contact is activated and a “0”-Signal
consequently transmitted on the Dupline bus, an alarm is started.
Reset:
This object makes it possible to include a button to reset the alarm and restart
the system.
If a contact is activated during reset, a new alarm is started after elapse of the
Reset delay.
Note:
This object must be configured in order to achieve correct function of
the water alarm system.
Alarm siren:
The alarm siren indicates the occurrence of an alarm. The channel configured
for this object can be used for alarm output on any output
modules. It usually activates a relay output switching a siren.
In case of alarm, this output flashes with an on-time of approx. 3 s and an off-
time of approx. 57 s.
Silent Alarm signal:
When an alarm occurs, a channel configured for this object is activated for 10
s and can thus be used to activate a telephone or GSM modem.
2.4.6. Water Alarm
• Function: Water alarm system including Passive detector, Active detector, Reset, Siren and
Alarm signal
• Application: Wiring of water indicators, eg the water stop sensor, to an alarm system
• Select with mouse (“Water alarm”) or short-cut key “W”
